Melbourne Water is planning to deliver upgrade works to the Ruffey Lake Retarding Basin at Templestowe. The upgrade works will ensure the retarding basin continues to reduce the risk of flooding to the community.

Why are we planning on upgrading the Ruffey Lake retarding basin?

Melbourne Water has over 200 retarding basins that we regularly assess for risks, conduct maintenance on, and upgrade as necessary. The Australian National Committee on Large Dams (ANCOLD) guidelines represents the best Australian and international engineering practice in the safe design, management and operation of dams. We use these guidelines to manage our retarding basins. The Ruffey Lake retarding basin has recently been assessed against the ANCOLD guidelines. This assessment has shown that upgrade works are necessary to ensure the retarding basin continues to reduce flood risk and operate safely for the community.

Planning Permit

Melbourne Water has received a planning permit to complete the following works at the Ruffey Lake Retarding Basin.

Scope of works

The works will include: 

  • removal of trees, root ball excavation and backfill of the embankment
  • filter trench excavation and backfill
  • filter drain outlet installation
  • filter diaphragm installation around existing outlet conduit
  • construct concrete cut-off wall
  • embankment hardening (geoweb installation)
  • embankment crest capping.


All works will be located within the Ruffey Lake Reserve at Templestowe.


What happens next?

Works will commence in late April 2019 and take approximately six months to complete (weather permitting).

What to expect during construction

We will do everything possible to minimise disruption during construction, however it is likely that nearby residents will notice:

  • large trucks and machinery working around the retarding basin
  • worker amenities set up within the construction area
  • some noise, dust and vibration from construction works
  • removal of trees and vegetation from the retarding basin embankment - trees in other parts of the reserve will be retained 
  • construction traffic and equipment will enter and exit the site via King Street.


An extensive revegetation plan will be implemented once the works are completed. Trees and shrubs will be planted within the Retarding Basin (away from the embankment).

Timing of works

Works will commence in late April 2019 and take approximately six months to complete (weather permitting). Construction hours will be Monday to Friday 7am to 6pm and Saturdays from 7am to 1pm in accordance with the EPA regulations.

More information 

Community Pop Out sessions

The project team will be in the area to answer your questions from 15/04/19 to 26/04/19 (excluding public holidays). Just call us and we’ll ‘pop out’ and see you.

Contact us

Last updated:
3 June 2019